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Finding the Fourth Proportional to 539,160.20, 808,221.90 and 419,150.60

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Solution

The fourth proportional to 539,160.20, 808,221.90 and 419,150.60 is: 628,322.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,160.20 : 808,221.90 = 419,150.60 : x
  2. Step 2: Convert to fraction form
    539,160.20/808,221.90 = 419,150.60/x
  3. Step 3: Cross multiply
    539,160.20x = 808,221.90 × 419,150.60
  4. Step 4: Simplify right side
    539,160.20x = 338,766,694,318.14
  5. Step 5: Solve for x
    x = 338,766,694,318.14/539,160.20
  6. Step 6: Final answer
    x = 628,322.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.